EXHIBIT 11 STATEMENT RE COMPUTATION OF PER SHARE EARNINGS (IN THOUSANDS, EXCEPT PER SHARE DATA) FOR THE YEARS ENDED DECEMBER 31, 1994 1993 1992 Net income used for earnings per share calculation $66,196 $56,115 $47,782 Earnings Per Common Share Weighted average outstanding shares 64,785 63,985 58,678 Net effect of outstanding options 2,520 3,616 4,984 Weighted average common and common equivalent shares outstanding 67,305 67,601 63,662 Net income per share $0.98 $0.83 $0.75 Fully diluted computation not presented since such amounts differ by less than 3 percent of the net income per share amounts shown above.